A hidden leak at a business drives up the water bill, damages the building, and can disrupt tenants — often before anyone sees a drop. New Pro pinpoints commercial leaks across the Westside without needless demolition, flat-rate.
Written bySteven Lockhart
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Reviewed byMiguel Lopez, Owner & Licensed Plumber, New Pro Plumbing (CSLB #974600)
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Last reviewedJune 2026 · 7 min read
Quick Answer
A hidden leak at a business — in a slab, a wall, or an underground line — wastes water, damages the building, and can disrupt tenants long before it is visible. New Pro pinpoints commercial leaks with acoustic and pressure methods, so the repair is targeted and demolition is minimal. Flat-rate after detection.
Commercial leak detection is about precision — finding the leak exactly, so the repair is small. This page is part of our commercial plumbing coverage across West Los Angeles. The U.S. EPA notes how much water leaks waste (EPA WaterSense), and in a commercial building a hidden leak can run the meter and damage the structure for weeks. The goal is to locate it without demolishing the building to find it.
Commercial leak detection is the use of acoustic, pressure, and thermal methods to locate hidden water leaks in a business property — in slabs, walls, ceilings, and underground lines — precisely enough that the repair targets only the affected spot.
A hidden leak usually announces itself indirectly: a high water bill with no change in use, the sound of running water when everything is off, a warm spot on a floor over a hot-water slab leak, or unexplained damp and staining. Catching these early, before water is pooling, limits both the loss and the damage — which in a commercial building can be substantial.
We locate the leak with acoustic listening equipment, line pressure testing, and where useful thermal imaging, marking its exact position. That precision means the repair — whether a slab leak or a section of failing pipe — opens only the spot that needs it. The alternative, exploratory demolition, costs far more and disrupts the business needlessly.
Commercial leaks hide in slabs, walls, ceilings, and underground supply and irrigation lines. A slab leak beneath a concrete floor is among the most damaging, undermining flooring and running continuously. Underground supply leaks waste water and can erode soil around the foundation.
We use the right method for each: acoustic listening for pressurized leaks, pressure isolation testing to confirm which line is losing, and thermal imaging for hot-water slab leaks. The result is a precise location, not a guess.
Water bill climbing with no explanation? Let us find the leak.
Call (310) 663-7666In a multi-tenant building a leak is not just a plumbing problem — it can damage multiple units, disrupt tenants, and create liability. Fast, accurate detection limits the spread and lets us coordinate a targeted repair with minimal disruption.
For property managers, we fold leak detection into a broader maintenance and response plan so a hidden leak is caught and located before it becomes a multi-unit claim.
The Bottom Line
A hidden commercial leak wastes water and damages the building before anyone sees a drop. New Pro pinpoints it with acoustic, pressure, and thermal methods, so the repair opens only the spot that needs it — no demolition on guesswork. Flat-rate after we locate it.
The usual first sign is an unexplained jump in the water bill with no change in use. Others include the sound of running water when everything is off, a warm spot on a floor, unexplained damp or staining, and a water meter that moves when nothing is running. Any of these warrants detection.
Yes — that is the point of leak detection. We use acoustic listening, pressure testing, and thermal imaging to pinpoint the leak’s exact location, so the repair opens only that spot. Exploratory demolition to find a leak is exactly what professional detection avoids.
A slab leak is a leak in a water line running beneath or within the concrete slab a building sits on. In commercial buildings it can undermine flooring, damage the structure, and run the meter continuously. We locate slab leaks precisely — often by thermal imaging for hot-water lines — so the repair is targeted.
More urgent than it looks. A hidden leak wastes water continuously, damages the building, and in a multi-tenant property can affect several units and create liability. The longer it runs, the more it costs in water and structural damage — early detection limits both.
That pattern strongly suggests a hidden leak. The water is going somewhere — into a slab, a wall, the ground, or a continuously running fixture. We detect and locate it precisely so you stop paying for wasted water and prevent the building damage that follows.
Yes. Detection and repair go together — once we pinpoint the leak, we show you the location and quote a flat-rate repair targeted to that spot, whether it is a slab leak, a section of failing pipe, or an underground line. You see exactly what needs fixing before any work.
This page was written by the New Pro Plumbing content team and reviewed for technical accuracy by Miguel Lopez, owner and California-licensed plumber (CSLB #974600). Guidance follows U.S. EPA, U.S. Department of Energy, and California agency sources where cited. Any figures reflect New Pro Plumbing's typical practice and West Los Angeles conditions, not a quote — we confirm pricing in writing before any work begins.
What’s new: June 2026 — first publication.
A hidden leak at a business drives up the water bill, damages the building, and can disrupt tenants — often before anyone sees a drop. New Pro pinpoints commercial leaks across the Westside without needless demolition, flat-rate.
